Patehi office



UNITEDSTATES ATENT FICE I jf w.1M.` B. HARTLEY, oF NEW voran, `N. i'.

" i" rnnssron CYLINnRocoNicAL HOLLOW PRoJncTiLEsBY PRESSURE.

` Beit known thatI, WILLIAM ballitotomiltmui/ concern.' y

M; B. HART- LEY,ofthe city and StatefoflNew York, have invented newfanldif useful `Hollow-Ball Press; and `I do hereby declare that the following is a" fu`ll,clea`r,"` and' exact description of` the construction "land operation of the y y f "connectedtherewithzwthe cover Ilbeing ref` moved to show sliding sections Fig.` 2 isa Figli` isa `vertical section `on line yy, Fig. l.

y same, reference being had to the annexed drawings, forming part of this f specification, inwhichi Figure` l `is a plan `view Aof die and i parts verticalsectionon line of Fig;` l, showing formation 1of die "andposltion of punches.

Fig.4 is a longitudinal section `through the t y axis of ball formed `bythis machine.

"` chine.

Similar charactersofreference inthe several` figures *denote the samepart of the ma- The obj ect "of invention "format tionof hollow` balls bypressing machinery `so;` constructedyand` arranged as to effect great rapidity of manufacture, `and insure uniformity in the caliber ofthe balls pro f duced. Its nature consists in mounting the die and partsfconnected therewith upon a `sliding carriage so adjusted relative tothe forming and capping punches, that the ball may at will receive the action of either; and

t I in so` combining withwthe movable dies, a

hardened steel collar,"` that the buttof the ball shall be `formed therein for `insuring uniformity of caliberfto the balls and materially aiding theirdischarge from" the machine; the details of construction and'operationbeing asset forth in the following de? scription and annexed drawing, in which- A is the die for forming the exterior surface of the ball, `made up of the edge of the collar R, and fo-ursections B, B', C, C", said sections moved" inward by the eccentrics t "D, `D,`E, E', on the rim "G, and separated by the actionof the` springs "a, when the pres sure of the eccentrics is removed. "The rim lz`andsl1des rest on a carriage or bed H, and

are held downby a perforated cover I. The

collar constitutingtheupper pOltiOIl 0f the die A is formed of hardened steel, and rests upon theguidesU and beneaththecover I;

` the upper portions ofA the sliding sections B,B, C, C', being cut outto admit said col- 5g lar, andat the same time capable ofmoving beneath it.` The inner surface of this collar is smooth and true and is designed to form @Specification of Letters Patent No. 12,574, dated March 20, 1855. j

the straight portion Vof `the ball7 ,its width being suicient to insure the requisite strength The movable portion of the die neednot necessarily be formed of four sections, astwo or anysuitable number may be employed. l On the sections are ridges C for groovingthe balls as shown in Fig. 4, though -this machine is of course applicable to the formation of smooth balls.

Above the die are arranged the punches P P, the former for giving the concavity and `pressing the ball into the die, and the latter for capping and discharging the ball from the machine. The forming punch P is operatedbyan eccentric shaft or in any suitable y manner, and the capping punch `is driven down bya blow from a hammer lorA inany other way that will serve the end in View: springs maintaining these punches in `an elevated position. As however the operationof moving these punches isnot essential to this invention, `the details need not be here dwelt upon; their position relative to the die being all that it is necessary to consider. The carriage or bed H, upon which the die and parts connected therewith rest, is movable upon the bed K between the. stops bandbfa suiiicient distance to bring the opening 0 in the cover I alternately under the punches P and P.

. The "operation of this machine is as fol lows: The solid ball is formed by press, or in any other manner, of a size to enter the die without difficulty; the smooth surface of the ball passing clear of the ridges c. The die being closed as shown in the drawing; the.

solid ball is inserted, the carriage H run to the stop b, and the punch P permitted to descend.` The head e of this punch enters` the ball, forming the cavity shown in Fig. 4, and spreading the ball so as to fill the die; the straight portion exactly filling the collar R.

The punch P rises instantly, and the operator after moving the carriage H so that the rim G rests against the stop b places the cap z' (Fig.` 4) on the butt of the ball and depresses the punch P, the head f of which drives the cap to its place. This punch flies up by reason of the spring m, when the operator fturning the lever Q as shown by arrow `l, removes the pressure of the eccentrics from the die sections, permitting them to move back and leave the ball suspended in the collar It. The punch P is then made again to descend, and by striking the ball, frees it from the collar and causes it to drop through the opening T inthe bed K. The die is then closed by turning rim Gr, and the machine is ready for the reception of another ball.

The collar R by forming the butt, prevents the change which would take place in the caliber of the balls by the wear of the machine, if the butt were formed by the sectional die; as from the pressure and other causes there would necessarily be a variable expansion of the parts from the wear of the machine, and thus render the caliber of the balls unequal. The capping of the ball while in the die also serves to preserve the equality of the caliber, and also saves much labor in capping, as from the rinciple on which this ball acts it must be held firmly at its base while being capped. Besides gaging the caliber of t-he ball, the collar R aids very materially in the discharge of the finished ball from the machine, as when the die is opened the sections separate from the ball and leave it suspended by the collar in the center of the die and in position to be readily 'discharged by the downward stroke of the punch P, and thus insure a certain delivery, a result likely to be frustrated were the sectional dies used alone, for in most cases the ball would adhere to one of the sections by reason of the grooves of the ball and ridges of the die and fail to leave the die when opened.

I do not claim the manner of operating the, die sections, but

IVhat I do claim as new and of my own invention, is-

1. The collar Rin combination with the sectional parts of the die, constructed, arranged, and operating, substantially as and for the purposes set forth.

2. I also claim the arrangement relative to the punches P P, of the die A, with a horizontal motion of suiicient amplitude to admit of the successive action of the punches, substantially as and for the purposes setforth.

3. I further claim capping the ball while in its die, and while held firmly at its base,

by a punch, which punch on the opening ofthe sections, will by a subsequent or continuous motion discharge the ball, capped and ready for use.

In testimony whereof, I have hereunto signed byiname before two subscribing witnesses.

W. M. B. HARTLEY.

Witnesses:

Gro. PATfrEN, JOHN L. SMITH. 

